Jet structure of baryon excess in Au+Au collisions at root SNN=200 GeV
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Two particle correlations between identified meson and baryon trigger particles with 2.5 < p (T)(T)(<4.0 GeV/c and lower p ) (charged hadrons have been measured at midrapidity by the PHENIX experiment at RHIC in p+p,d+Au, and Au+Au collisions at s)(NN) = 200 GeV. In noncentral Au+Au collisions, the probability of finding a hadron near in azimuthal angle to the trigger particles is almost identical for mesons and baryons and significantly higher than in p+p collisions. The associated yields for trigger baryons decrease in the most central collisions, consistent with some baryon production by thermal recombination in addition to hard scattering.
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This article is published as Adler, S. S., S. Afanasiev, C. Aidala, N. N. Ajitanand, Y. Akiba, A. Al-Jamel, J. Alexander et al. "Jet structure of baryon excess in Au+ Au collisions at s NN= 200 GeV." Physical Review C 71, no. 5 (2005): 051902. DOI: 10.1103/PhysRevC.71.051902. Posted with permission.